[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr [part-…

cc/trees/layer_tree_host_unittest_copyrequest.cc

Index: cc/trees/layer_tree_host_unittest_copyrequest.cc
diff --git a/cc/trees/layer_tree_host_unittest_copyrequest.cc b/cc/trees/layer_tree_host_unittest_copyrequest.cc
index 860f2831bd5b1536c6efbf90bc53872e16fb4ea1..317ec68fb1d620a48c0f4b5374d6855d8e36f880 100644
--- a/cc/trees/layer_tree_host_unittest_copyrequest.cc
+++ b/cc/trees/layer_tree_host_unittest_copyrequest.cc
@@ -183,9 +183,9 @@ class LayerTreeHostCopyRequestTestLayerDestroyed
 
         // Destroy the main thread layer right away.
         main_destroyed_->RemoveFromParent();
-        main_destroyed_ = NULL;
+        main_destroyed_ = nullptr;
 
-        // Should callback with a NULL bitmap.
+        // Should callback with a nullptr bitmap.
         EXPECT_EQ(1, callback_count_);
 
         // Prevent drawing so we can't make a copy of the impl_destroyed layer.
@@ -201,7 +201,7 @@ class LayerTreeHostCopyRequestTestLayerDestroyed
 
         // Destroy the impl thread layer.
         impl_destroyed_->RemoveFromParent();
-        impl_destroyed_ = NULL;
+        impl_destroyed_ = nullptr;
 
         // No callback yet because it's on the impl side.
         EXPECT_EQ(1, callback_count_);
@@ -211,7 +211,7 @@ class LayerTreeHostCopyRequestTestLayerDestroyed
         layer_tree_host()->SetNeedsCommit();
         break;
       case 5:
-        // We should get another callback with a NULL bitmap.
+        // We should get another callback with a nullptr bitmap.
         EXPECT_EQ(2, callback_count_);
         EndTest();
         break;